viele viele sachen

git-svn-id: http://svn.lsim.tuxzone.org/trunk@29 4bec179b-ab65-46ed-a5f8-55b8b5c735d0

lsim.kdevelop

@@ -161,7 +161,7 @@
         <lsim>/mnt/sdb1/c++/lsim</lsim>
       </cwd>
       <debugarguments>
-        <lsim></lsim>
+        <lsim/>
       </debugarguments>
     </run>
     <general>

lsim.kdevses

@@ -1,12 +1,12 @@
 <?xml version = '1.0' encoding = 'UTF-8'?>
 <!DOCTYPE KDevPrjSession>
 <KDevPrjSession>
- <DocsAndViews NumberOfDocuments="15" >
+ <DocsAndViews NumberOfDocuments="18" >
   <Doc0 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/simulscene.h" >
-   <View0 Encoding="" line="139" Type="Source" />
+   <View0 Encoding="" line="201" Type="Source" />
   </Doc0>
   <Doc1 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/simulscene.cpp" >
-   <View0 Encoding="" line="110" Type="Source" />
+   <View0 Encoding="" line="106" Type="Source" />
   </Doc1>
   <Doc2 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/graphicsellipseitem.h" >
    <View0 Encoding="" line="66" Type="Source" />
@@ -15,10 +15,10 @@
    <View0 Encoding="" line="207" Type="Source" />
   </Doc3>
   <Doc4 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/lsim.h" >
-   <View0 Encoding="" line="73" Type="Source" />
+   <View0 Encoding="" line="91" Type="Source" />
   </Doc4>
   <Doc5 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/lsim.cpp" >
-   <View0 Encoding="" line="52" Type="Source" />
+   <View0 Encoding="" line="293" Type="Source" />
   </Doc5>
   <Doc6 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/probechargewidget.cpp" >
    <View0 Encoding="" Type="Source" />
@@ -33,20 +33,29 @@
    <View0 Encoding="" Type="Source" />
   </Doc9>
   <Doc10 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/homobfieldwidget.h" >
-   <View0 Encoding="" line="25" Type="Source" />
+   <View0 Encoding="" Type="Source" />
   </Doc10>
   <Doc11 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/main.cpp" >
-   <View0 Encoding="" line="31" Type="Source" />
+   <View0 Encoding="" Type="Source" />
   </Doc11>
   <Doc12 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/application.qrc" >
-   <View0 Encoding="" line="17" Type="Source" />
+   <View0 Encoding="" line="19" Type="Source" />
   </Doc12>
   <Doc13 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/expdoublespinbox.h" >
-   <View0 Encoding="" line="44" Type="Source" />
+   <View0 Encoding="" Type="Source" />
   </Doc13>
   <Doc14 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/fielditem.cpp" >
    <View0 Encoding="" line="122" Type="Source" />
   </Doc14>
+  <Doc15 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/graphicsview.h" >
+   <View0 Encoding="" line="42" Type="Source" />
+  </Doc15>
+  <Doc16 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/graphicsview.cpp" >
+   <View0 Encoding="" line="101" Type="Source" />
+  </Doc16>
+  <Doc17 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/homoefielditem.cpp" >
+   <View0 Encoding="" line="17" Type="Source" />
+  </Doc17>
  </DocsAndViews>
  <pluginList>
   <kdevdebugger>

src/application.qrc

@@ -16,6 +16,9 @@
 	<file>icons/window-simulmode.svg</file>
 	<file>icons/application-exit.svg</file>
 	<file>icons/lsim.svg</file>
+	<file>icons/view-fullscreen.svg</file>
+	<file>icons/view-restore.svg</file>
+
 
 </qresource>	
 </RCC>

src/graphicsview.cpp

@@ -20,12 +20,21 @@
 #include "graphicsview.h"
 //#include <QGLWidget>
 #include <QGraphicsItem>
+#include <QDebug>
+#include <cmath>
+#include <QMouseEvent>
+#include <QStatusBar>
+#include "simulscene.h"
+#include <QLocale>
 
 
-GraphicsView::GraphicsView(): QGraphicsView() {
+GraphicsView::GraphicsView(QWidget * parent, QStatusBar* statusbar): QGraphicsView(parent) {
+	mainWindowStatusBar = statusbar;
 	//setMinimumSize(900,700);
 	//setDragMode(QGraphicsView::ScrollHandDrag);
 	//setRenderHint (QPainter::QPainter::Antialiasing,true);
+	//setCacheMode(QGraphicsView::CacheBackground);
+	//setTransformationAnchor (QGraphicsView::AnchorUnderMouse);
 
 
 	//scale(2,2);
@@ -34,6 +43,56 @@ GraphicsView::GraphicsView(): QGraphicsView() {
 
 }
 
+void GraphicsView::drawBackground ( QPainter * painter, const QRectF & rect ) {
+	int lineDistance = 20;
+
+	double startX = rect.x();
+	double startY = rect.y();
+	double endX = rect.x() + rect.width();
+	double endY = rect.y() + rect.height();
+
+	QPainterPath currPath;
+	int startPaintX = floor(startX/(double)lineDistance)*lineDistance;
+	int endPaintX = ceil(endX/(double)lineDistance)*lineDistance;
+	for (double i = startPaintX; i<endPaintX; i= i+lineDistance) {
+		if (i==0 )continue;
+		QPolygonF polygon;
+		polygon << QPointF(i,startY) << QPointF(i,endY);
+		currPath.addPolygon(polygon);
+	}
+	int startPaintY = floor(startY/(double)lineDistance)*lineDistance;
+	int endPaintY = ceil(endY/(double)lineDistance)*lineDistance;
+	for (double i = startPaintY ; i<endPaintY; i= i+lineDistance) {
+		if (i==0 )continue;
+		QPolygonF polygon;
+		polygon << QPointF(startX,i) << QPointF(endX,i);
+		currPath.addPolygon(polygon);
+	}
+	painter->setPen(QPen(Qt::lightGray, 1, Qt::SolidLine));
+	painter->drawPath(currPath);
+
+	painter->setPen(QPen(Qt::green, 1, Qt::SolidLine));
+	painter->drawLine(startX,0,endX,0);
+	painter->drawLine(0,startY,0,endY);
+
+}
+
+void GraphicsView::mouseMoveEvent ( QMouseEvent * e ) {
+	QGraphicsView::mouseMoveEvent(e);
+	SimulScene* simulScene = dynamic_cast<SimulScene*> (scene());
+	if (simulScene != 0 && mainWindowStatusBar !=0) {
+		QPointF scenePos = mapToScene(e->pos());
+		QString posString;
+		posString += "Mausposition: ";
+		posString +=  "x: " + QLocale().toString(scenePos.x(),'g') + " px"+QChar(8793);
+		posString += QLocale().toString(scenePos.x()*simulScene->getMeterPerPx(),'g') + " m";
+		posString += "    y: " + QLocale().toString(scenePos.y(),'g') + " px"+QChar(8793);
+		posString += QLocale().toString(scenePos.y()*simulScene->getMeterPerPx(),'g') + " m";
+		mainWindowStatusBar->showMessage(posString);
+	}
+}
+
+
 void GraphicsView::enableOGLViewport() {
 	//setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers)));
 }

src/graphicsview.h

@@ -24,13 +24,14 @@
 
 class HomoEFieldItem;
 class QTimeLine;
+class QStatusBar;
 /**
 	@author Peter Dahlberg <pdahlberg@gmail.com>
 */
 class GraphicsView : public QGraphicsView {
 	Q_OBJECT
 	public:
-		GraphicsView();
+		GraphicsView(QWidget * parent = 0, QStatusBar* statusbar = 0);
 
 		~GraphicsView();
 
@@ -38,6 +39,11 @@ class GraphicsView : public QGraphicsView {
 		void enableOGLViewport();
 		void disableOGLViewport();
 	private:
+		QStatusBar * mainWindowStatusBar;
+	
+	protected:
+		void drawBackground ( QPainter * painter, const QRectF & rect );
+		void mouseMoveEvent ( QMouseEvent * e );
 
 
 };

src/homoefielditem.cpp

@@ -29,7 +29,7 @@ HomoEFieldItem::HomoEFieldItem(QRectF sizeRect)
 	setRectF(sizeRect);
 	dockWidget = new HomoEFieldWidget(0,0,this);
 	setFieldPower(10);
-	setFieldLineDistance(10);
+	setFieldLineDistance(12);
 	setFlag(ItemIsMovable);
 	setFlag(ItemIsSelectable);
 	setFlag(ItemIsFocusable);
@@ -38,6 +38,7 @@ HomoEFieldItem::HomoEFieldItem(QRectF sizeRect)
 
 	//QGraphicsRectItem * testItem = new QGraphicsRectItem(QRectF(-10,-10,6,6), this);
 	//testItem->setBrush(Qt::SolidPattern);
+	connect(this, SIGNAL(heightChanged(double)), this, SLOT(handleVoltageChange()));
 
 
 
@@ -124,6 +125,16 @@ void HomoEFieldItem::setFieldPower (double fieldPower ) {
 	//if (this->fieldPower == fieldPower) return;
 	this->fieldPower = fieldPower;
 	emit fieldPowerChanged(fieldPower);
+	handleVoltageChange ();
+}
+
+void HomoEFieldItem::setVoltage (double voltage ) {
+	setFieldPower( voltage/getRectF().height());
+
+}
+
+void HomoEFieldItem::handleVoltageChange () {
+	emit voltageChanged(getFieldPower()*getRectF().height());
 }
 
 

src/homoefielditem.h

@@ -58,12 +58,15 @@ class HomoEFieldItem : public FieldItem {
 	
 	public slots:
 		void setFieldPower (double fieldPower );
-
+		void setVoltage (double voltage );
 		void setOuterPenWidth ( double theValue );
 
-	
+
+	private slots:
+		void handleVoltageChange();	
 	signals:
 		void fieldPowerChanged(double fieldPower);
+		void voltageChanged(double voltage);
 
 	private:
 		//! Abstand der Feldlinien in der Zeichnung

src/homoefieldwidget.cpp

@@ -117,11 +117,13 @@ void HomoEFieldWidget::createWidget()
 	connect(fieldPowerBox, SIGNAL(valueChanged(double)),homoEField ,SLOT(setFieldPower(double)) );
 
 	ExpDoubleSpinBox* voltageBox = new ExpDoubleSpinBox;
-	voltageBox->setRange(-1e+200,1e+200);
+	voltageBox->setRange(0,1e+200);
 	voltageBox->setDecimals(35);
 	voltageBox->setDisplayDecimals(3);
 	voltageBox->setKeyboardTracking(false);
 	voltageBox->setSuffix(" V");
+	connect(homoEField ,SIGNAL(voltageChanged(double)),voltageBox, SLOT(setValue(double)) );
+	connect(voltageBox, SIGNAL(valueChanged(double)),homoEField ,SLOT(setVoltage(double)) );
 
 	QGridLayout* constGridLayout = new QGridLayout;
 	//constGridLayout->setSizeConstraint(QLayout::SetFixedSize);

src/lsim.cpp

@@ -39,7 +39,7 @@
 
 
 lsim::lsim() {
-	gview = new GraphicsView();
+	gview = new GraphicsView(this,statusBar());
 	setCentralWidget (gview);
 	createScene();
 	createActions();
@@ -66,6 +66,19 @@ void lsim::about() {
 
 
 void lsim::createActions() {
+	QIcon fullScreenIcon = QIcon(":icons/view-fullscreen.svg");
+	fullScreenIcon.addFile(":icons/view-restore.svg", QSize(),QIcon::Normal,QIcon::On);
+	fullScreenIcon.addFile(":icons/view-restore.svg", QSize(),QIcon::Disabled,QIcon::On);
+	fullScreenIcon.addFile(":icons/view-restore.svg", QSize(),QIcon::Active,QIcon::On);
+	fullScreenIcon.addFile(":icons/view-restore.svg", QSize(),QIcon::Selected,QIcon::On);
+	acts.fullScreenAct = new QAction (tr ("&Vollbild"), this);
+	acts.fullScreenAct->setStatusTip (tr ("In den Vollbildmodus Wechseln"));
+	acts.fullScreenAct->setIcon(fullScreenIcon);
+	acts.fullScreenAct->setCheckable(true);
+	acts.fullScreenAct->setShortcut(QKeySequence(Qt::Key_F11));
+	connect (acts.fullScreenAct, SIGNAL (toggled(bool)), this, SLOT (goToFullscreen(bool)));
+	connect (this, SIGNAL (fullScreenModeChanged(bool)), acts.fullScreenAct, SLOT (setChecked(bool)));
+
 	acts.aboutAct = new QAction (tr ("&About"), this);
 	acts.aboutAct->setStatusTip (tr ("Show the application's About box"));
 	connect (acts.aboutAct, SIGNAL (triggered()), this, SLOT (about()));
@@ -115,6 +128,7 @@ void lsim::createActions() {
 
 	acts.exitAct = new QAction (tr ("Beenden"), this);
 	acts.exitAct->setStatusTip (tr ("lsim beenden"));
+	acts.exitAct->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
 	acts.exitAct->setIcon(QIcon(":icons/application-exit.svg"));
 	connect (acts.exitAct, SIGNAL (triggered()), qApp, SLOT (quit()));
 
@@ -152,13 +166,13 @@ void lsim::createActions() {
 
 	//Edit, insert, Modechange
 
-	acts.itemEditModeAct = new QAction (tr ("Bearbeiten"), this);
+	acts.itemEditModeAct = new QAction (tr ("Felder Bearbeiten"), this);
 	acts.itemEditModeAct->setStatusTip (tr ("Die Anordnung ver\344ndern"));
 	acts.itemEditModeAct->setIcon(QIcon(":icons/edit-scene.svg"));
 	acts.itemEditModeAct->setCheckable(true);
 	acts.itemEditModeAct->setData(QVariant(SimulScene::FieldItemEdit));
 
-	acts.insertEFieldItemAct = new QAction (tr ("elektrisches Feld hizuf\374gen"), this);
+	acts.insertEFieldItemAct = new QAction (tr ("Elektrisches Feld hizuf\374gen"), this);
 	acts.insertEFieldItemAct->setStatusTip (tr ("Ein elekrisches Feld hizuf\374gen"));
 	acts.insertEFieldItemAct->setIcon(QIcon(":icons/insert-efield.svg"));
 	acts.insertEFieldItemAct->setCheckable(true);
@@ -194,16 +208,18 @@ void lsim::createActions() {
 	
 
 	//Window Mode
-	acts.editModeAct = new QAction (tr ("in den Bearbeitungsmodus wechseln"), this);
+	acts.editModeAct = new QAction (tr ("&Bearbeitungsmodus"), this);
 	acts.editModeAct->setStatusTip (tr ("erm\366glicht das Bearbeiten der Anordnung"));
 	acts.editModeAct->setIcon(QIcon(":icons/window-editmode.svg"));
 	acts.editModeAct->setCheckable(true);
+	acts.editModeAct->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_E));
 	acts.editModeAct->setData(QVariant(lsim::EditMode));
 
-	acts.simulationModeAct = new QAction (tr ("in den Simulation wechseln"), this);
+	acts.simulationModeAct = new QAction (tr ("&Simulationsmodus"), this);
 	acts.simulationModeAct->setStatusTip (tr ("Berechnet die Flugbahn und wechselt in den Simulationsmodus"));
 	acts.simulationModeAct->setIcon(QIcon(":icons/window-simulmode.svg"));
 	acts.simulationModeAct->setCheckable(true);
+	acts.simulationModeAct->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_R));
 	acts.simulationModeAct->setData(QVariant(lsim::SimulationMode));
 
 	windowModeActGroup = new QActionGroup(this);
@@ -215,15 +231,21 @@ void lsim::createActions() {
 }
 
 void lsim::createMenus() {
-	fileMenu = menuBar()->addMenu(tr("Datei"));
+	fileMenu = menuBar()->addMenu(tr("&Datei"));
 
+	fileMenu->addAction(acts.resetAct);
 	fileMenu->addAction(acts.exitAct);
-	menuBar()->addMenu(tr("Bearbeiten"));
 
-	viewMenu = menuBar()->addMenu(tr("Ansicht"));
+	editMenu = menuBar()->addMenu(tr("&Bearbeiten"));
-	viewMenu->addAction(acts.resetAct);
 
-	menuBar()->addMenu(tr("Einstellungen"));
+
+	viewMenu = menuBar()->addMenu(tr("&Ansicht"));
+	viewMenu->addAction(acts.editModeAct);
+	viewMenu->addAction(acts.simulationModeAct);
+	viewMenu->addSeparator();
+	viewMenu->addAction(acts.fullScreenAct);
+
+	menuBar()->addMenu(tr("&Einstellungen"));
 
 
 	helpMenu = menuBar()->addMenu (tr ("&Help"));
@@ -271,6 +293,7 @@ void lsim::initWindowMode(WindowMode newMode) {
 	removeDockWidget(simulOptDock);
 	gview->setDragMode(QGraphicsView::NoDrag);
 	gview->setInteractive(true);
+	
 	if (newMode == lsim::EditMode) {
 		simulscene->clearFlightPath();
 		acts.timerStop->trigger();
@@ -280,8 +303,9 @@ void lsim::initWindowMode(WindowMode newMode) {
 		addDockWidget(Qt::LeftDockWidgetArea,fieldItemEditDock);
 		addDockWidget(Qt::LeftDockWidgetArea,probeItemDock);
 		addDockWidget(Qt::LeftDockWidgetArea,sceneDock);
-		tabifyDockWidget(probeItemDock,fieldItemEditDock);
+		tabifyDockWidget(probeItemDock,sceneDock);
-		tabifyDockWidget(fieldItemEditDock, sceneDock);
+		tabifyDockWidget(sceneDock,fieldItemEditDock);
+		sceneDock->show();
 		sceneModeBar->setVisible(true);
 		upDownBar->setVisible(true);
 		fieldItemEditDock->setVisible(true);
@@ -303,11 +327,11 @@ void lsim::initWindowMode(WindowMode newMode) {
 		acts.itemEditModeAct->trigger();
 		simulscene->clearSelection();
 		acts.calculate->trigger();
-		//gview->setScene(simulscene); //ueberfluessige scrollbars entfernen
 		gview->centerOn(simulscene->getProbeChargeItem());
 
 	}
 
+
 }
 
 
@@ -318,6 +342,7 @@ void lsim::createStatusBar() {
 void lsim::createScene() {
 	simulscene = new SimulScene();
 	gview->setScene(simulscene);
+	simulscene->addRect(-qApp->desktop()->screenGeometry().width(),-qApp->desktop()->screenGeometry().height(), qApp->desktop()->screenGeometry().width()*2, qApp->desktop()->screenGeometry().height()*2)->setVisible(false);
 }
 
 void lsim::createDocks() {
@@ -614,4 +639,13 @@ void lsim::resetAll() {
 	simulscene->resetScene();
 	gview->centerOn(0,0);
 
+}
+
+void lsim::goToFullscreen(bool yesno) {
+	if (yesno && windowState() == Qt::WindowFullScreen) return;
+	if (!yesno && windowState() != Qt::WindowFullScreen) return;
+
+	setWindowState(windowState() ^ Qt::WindowFullScreen);
+	//qDebug()<< (windowState() == Qt::WindowFullScreen);
+	emit fullScreenModeChanged(windowState() == Qt::WindowFullScreen);
 }

src/lsim.h

@@ -55,6 +55,8 @@ class lsim: public QMainWindow {
 
 	protected:
 		void closeEvent (QCloseEvent *event);
+	public slots:
+		void goToFullscreen(bool yesno);
 
 	private slots:
 		void about();
@@ -119,6 +121,7 @@ class lsim: public QMainWindow {
 			QAction *probeChargeItemPlaceAct;
 
 			QAction *resetAct;
+			QAction *fullScreenAct;
 		};
 		Actions acts;
 
@@ -138,6 +141,7 @@ class lsim: public QMainWindow {
 	signals:
 		void windowModeChanged(WindowMode mode);
 		void timeLineDurationChangedSec(double duration);
+		void fullScreenModeChanged(bool mode);
 };
 
 #endif

src/main.cpp

@@ -22,14 +22,30 @@
 #include <QApplication>
 #include <QIcon>
 #include "lsim.h"
+#include <QDesktopWidget>
+#include <QDebug>
 
 int main(int argc, char *argv[])
 {
 	Q_INIT_RESOURCE(application);
 	QApplication app(argc, argv);
 	app.setWindowIcon(QIcon(":icons/lsim.svg"));
+
 	lsim * mw = new lsim();
-	mw->show();
+	int dWidth = app.desktop()->availableGeometry(mw).width();
+	int dHeight = app.desktop()->availableGeometry(mw).height();
+	int frWidth = mw->frameGeometry().width() - mw->geometry().width();
+	int frHeight = mw->frameGeometry().height() - mw->geometry().height();
+	mw->resize(0.9*dWidth-frWidth, 0.9 *dHeight-frHeight);
+	int midX = (dWidth - mw->frameGeometry().width()) / 2.0;
+	int midY = (dHeight - mw->frameGeometry().height()) / 2.0;
+	mw->move(midX,midY);
+	if (dWidth <= 1024) {
+		mw->showMaximized();
+	}
+	else {		
+		mw->show();
+	}
 	return app.exec();
 }
 

src/simulscene.cpp

@@ -37,6 +37,7 @@
 #include <QPainterPath>
 #include <QGraphicsPathItem>
 #include <QListWidget>
+#include <QPainter>
 
 
 SimulScene::SimulScene ( QObject* parent ) : QGraphicsScene ( parent ) {
@@ -60,7 +61,7 @@ SimulScene::SimulScene ( QObject* parent ) : QGraphicsScene ( parent ) {
 
 	setFlightPathVisible();
 
-	addLine(0,-298,0,298,QPen(Qt::green, 1, Qt::SolidLine) )->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
+	/*addLine(0,-298,0,298,QPen(Qt::green, 1, Qt::SolidLine) )->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
 	addLine(-398,0,398,0,QPen(Qt::green, 1, Qt::SolidLine) )->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
 	
 	for (int i = -39; i< 39; ++i) {
@@ -76,7 +77,7 @@ SimulScene::SimulScene ( QObject* parent ) : QGraphicsScene ( parent ) {
 			line ->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
 			line->setZValue(-1);
 		}
-	}
+	}*/
 
 	ellipse1 = new GraphicsEllipseItem();
 	ellipse1->setRect(-2,-2,5,5);
@@ -102,6 +103,11 @@ SimulScene::SimulScene ( QObject* parent ) : QGraphicsScene ( parent ) {
 
 }
 
+void SimulScene::drawBackground ( QPainter * painter, const QRectF & rect ) {
+	QGraphicsScene::drawBackground(painter,rect);
+}
+
+
 void SimulScene::setupVars() {
 	//variablen initialisieren
 	setTimePerStep(1e-10);
@@ -111,7 +117,7 @@ void SimulScene::setupVars() {
 	setPxPerSec(90.0);
 
 	timer->setFrameRange(0,100);
-	timer->setUpdateInterval(30);
+	//timer->setUpdateInterval(30);
 	timer->setCurveShape(QTimeLine::LinearCurve);
 	
 	setTimeLineDuration(30000);
@@ -457,7 +463,7 @@ void SimulScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent) {
 }
 
 void SimulScene::keyPressEvent (QKeyEvent *keyevent) {
-	if(keyevent->key() == Qt::Key_Delete) {
+	if(keyevent->matches(QKeySequence::Delete)) {
 		deleteSelectedFieldItems();
 	}
 }

src/simulscene.h

@@ -199,6 +199,7 @@ class SimulScene : public QGraphicsScene {
 		void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
 		void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
 		void keyPressEvent ( QKeyEvent * keyEvent );
+		void drawBackground ( QPainter * painter, const QRectF & rect );
 };
 
 #endif